Caught in the Act!

 Hayden Panettiere and her Heroes costar Milo Ventimiglia, spending a night out together to support their castmate Adrian Pasdar. The two took in his Civil War-era musical Atlanta at the Geffen Playhouse in Los Angeles. After the show, the Heroes castmembers celebrated at a bash attended by Pasdar, his wife Natalie Maines and Leonard Roberts, an actor on the NBC show and a costar in Pasdar's play.

 Ashley Olsen, sitting up front and clapping during a burlesque show at a Calvin Klein party feting New York's New
Museum. As Olsen watched the racy act, which featured stripping, she got special attention – the dancer's unmentionables landed right on her table. Also at the party: Maggie Gyllenhaal,Julianne Moore and Lance Armstrong (though no word if he had any face time with Ashley!).

 Earlier, Lance Armstrong lunched at Michael's in New York
City. The Tour de France winner sported a power suit and his signature
Livestrong bracelet, looking really lean, an onlooker tells us.

 Benicio Del Toro, dining with five friends at Miami's Blue
Door at Delano. The group laughed over several bottles of Merlot, finishing
their four-hour meal with some drinks and dessert – specifically the
coco banana rolls.

 Black Eyed Peas member apl.de.ap, celebrating his 33rd
birthday at the Peapod Foundation’s Allan Pineda Lindo benefit bash at Vanguard Hollywood.
While Fergie wasn't there in person, the singer recorded
a video serenading her bandmate with "Happy Birthday."